When Channel 3 @ -100 position- When engine is not running - Channel 4 right switch will simulate engine failure to start- When engine is running - Channel 4 right switch will turn on/ off sirens- Channel 4 left switch will turn on the air horn

Hopefully this summarizes the features of the SLU functionalities and how simple it is to set it up and control via a GT3B.

Will have more running videos of the Semi-truck with the rest of the semi truckers in the group soon!

Thanks for watching!

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